Kaku no seikiYasunao Kojita, Tomohiro Okada, Akifumi Sumitomo, Kio Tanaka · First published 2016Open the Tome
"Taikoku" e no shūnen Abe seiken to Nihon no kikiOsamu Watanabe, Tomohiro Okada, Michio Gotō, Ninomiya, Atsumi · First published 2014Open the Tome
3. 11 o ikinobiruYōichi Komori, Shōko Egawa, Anzai, Ikurō, Itsuko Teruoka, Tomohiro Okada, Osamu Watanabe, Takashi Tsujii, Umehara, Takeshi · First published 2011Open the Tome
Chiiki jichi soshiki to jūmin jichiTomohiro Okada, Seiya Ishizaki · First published 2006Open the Tome
